Detecting Vertical Root Fractures Using Modified Methylene Blue Dye: A Preliminary In Vitro Study.

Area of Science:

• Endodontics
• Dental Radiology
• Diagnostic Imaging

Background:

• Vertical root fractures (VRFs) present diagnostic challenges, often leading to misdiagnosis and unnecessary dental interventions.
• Accurate detection of VRFs is crucial for preserving salvageable teeth and avoiding tooth extraction.

Purpose of the Study:

• To evaluate the efficacy of a novel radio-opaque dye in detecting vertical root fractures (VRFs).
• To compare the diagnostic capabilities of periapical radiographs (PARs) and cone-beam computed tomography (CBCT) in conjunction with the novel dye.

Main Methods:

• Vertical root fractures were induced in extracted premolars, with experimental groups receiving a novel dye and control groups methylene blue.
• Two-angled periapical radiographs (PARs) and cone-beam computed tomography (CBCT) images were acquired for all teeth.
• Three blinded investigators assessed VRF detection using a Likert scale, with inter-/intra-examiner reliability confirmed via Cronbach's alpha.

Main Results:

• Both CBCT and PAR demonstrated comparable effectiveness in detecting VRFs, with no statistically significant differences in mean detection values.
• The extent of VRFs and dye penetration were significantly enhanced when utilizing angled radiographs and the axial view of CBCT.
• The novel dye showed promising initial results in aiding radiographic detection of VRFs.

Conclusions:

• The novel radio-opaque dye shows potential as an adjunct for radiographically detecting vertical root fractures (VRFs).
• CBCT and PAR are equally effective for VRF detection when used with the dye.
• Further research is warranted to validate the clinical applicability of this dye for VRF diagnosis and management.